There is a problem. %% I don't like this as a first sentence. It is ambiguous and not confident (you CLAIM there is a problem?
Desirable information exists which is both inaccessible and unduplicated.
The existing frameworks of centralized and decentralized networked file systems (and web-servers and web-crawlers for that matter) do not adequately support the search aspects required. %% What specialized type of data? Desirable data? You have not specified. This makes no sense!
Furthermore, ranking algorithms like PageRank fail when there is no existing connectivity graph to compute the relative worth of results.

As a solution, we present the Ringer system. Ringer combines elements of distributed indexing with a fully functional and highly scalable read-write file system, designed to function on a global scale.
Ringer is a hybrid peer-to-peer system in which nodes transfer data directly between one another, but all metadata operations are handled by an overlay graph of specialized servers.
These metadata servers also facilitate two types of search: a tagging based distributed index and a completely automated similarity hash search. 